Ventilator.



UNITED. STATES,

Patented December 8, 1903.

WILLIAM G. GAGNF, OF PORTLAND, MAINE.-

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 746,064, dated December8, 1903.

Application filed llliay 20,1903. Serial No. 157,903. (No model.)

To all whom it may concern/.-

Be it known that 1, WILLIAM G. GAGNE, a citizen of the United States ofAmerica, and a resident of Portland, Cumberland county, State of Maine,have invented certain new and useful Improvements in Ventilators, ofwhich the following is a specification.

My invention relates to a ventilator or ventilating-cowl of that classwhich is applied to chimneys and the like and .in which is used a hollowsphere with vertical slots covered by external bands set off far enoughto form ventilating-spaces, through which thewind draws to create avacuum within the sphere.

The object of my invention is to inorease the efliciency of thesedevices by doing away with the dead space which is formed at the topwhere the radiating slots come together.

A further object of my invention is to cheapen and simplify theconstruction of these ventilators and get rid of the water, snow, &c.,which gets in through the slots.

I accomplish these objects by means of the hereinafter describedventilator.

I illustrate my invention by means of the accompanying drawings, inwhich Figure 1 is a vertical section on the line 'y y of Fig. 3. Fig. 2is a side elevation, and Fig. 3 is a section on the line w m of Fig. 1.

A represents the spherical sections so ar- I ranged that they will formvertical slots in the sphere between their adjacent edges. They arebolted or otherwise secured to the vertical cylinder e, which extends upinto the interior of the sphere. The lower ends of the sections A areformed with narrow openings a next to the cylinder 6, through which thewater may drip which is blown in through the slots. The upper ends ofthe sections A are bolted to the under side of a ring d, which forms anopening in the top of the sphere.

Outside of each of the slotted openings and separated from them by asuitable ventilat-- ing-space are a series of bands B, secured to thering 61 above and to the cylinder 6 below in the same manner as thesections A. These bands are somewhat wider than the slots and areparallel with them, and they form deflectopenings, creating a vacuumwithin and so forming a draft.

For the purpose of doing away with the dead space which has hithertoexisted in these ventilators at the apex I insert into the ring 61 acone-shaped deflector O, the upper end of which is provided with aflange c. The cone extends downward into the sphere and tends to splitthe ascending current and carry it directly out through the lateralslots. The cones may be removed from the ring and a cleaning device maybe introduced through the opening thus leftan important matter where theventilator is used on chimneys.

It will be seen that the ventilator thus made can be cheaply andstrongly constructed, an opening is provided for cleaning, a drip forgetting rid of the water, and the efficiency is increased by the conicaldeflector, which carries the gases directly out instead of allowing themto circulate around in the sphere.

I claim- I 1. The herein-described ventilator consisting of a hollowsphere having a series of vertical slotted openings, curved bandsoutside of said sphere covering said openings and separated therefrom byventilating-spaces, a cylinder extending into the lower portion of saidsphere and a cone-shaped deflector within said sphere extending from thetop downward.

2. The herein-described ventilator consisting of a hollow spherecomposed of a plural-- ity of separate sections, separated to formvertical slotted openings, a cylinder to which the lower edge of eachsection is secured, a ring to which the upper ends of said sections aresecured, curved bands outside of said sphere having their ends securedto said cylinder and a ring and arranged to cover said openings andseparated from them by a ventilatingspace and a conical deflectorfitting in said ringandextendingdownward into said sphere.

3. The herein-described ventilator consisting of a hollow spherecomposed of a plurality of separate sections separated to form verticalslotted openings, a cylinder towliich the lower ends of said sectionsare secured, the upper end of said cylinder extending upinto ing-plateswhich direct the wind by the slotted so said sphere, dripping openingsbeing left between the lower ends of said sections and said cylinder, aring to which the upper ends of said sect-ions are secured, curved bandsoutside of said sphere having their ends secured to said ring and saidcylinder and arranged to cover said openings and separated therefrom bya ventilating-space and a conical deflector fittin g in said ring andextending downward into said sphere.

Signed at Portland, Maine, this 14th day of May, 1903.

WILLIAM GAGNE. \Vitnesses:

BENJ. G. WARD, S. W. BATES.

